SU981323A1 - Process for producing molding composition from hydrolysis lignin - Google Patents

Description

(54) METHOD FOR GETTING PRESS MASS FROM HYDROLYSIS LIGNIN

. one . This invention relates to a technology for producing a press mass and can be used in woodworking. A known method for the production of wood-fiber plates, including the formation of a three-layer carpet, Jeriche, the middle layer includes hydrolytic lignin, treated with a 25% aqueous solution of ammonia to a pH of 5-7 in a quartz-like mass of {1 Most similar to the invention according to the technical essence and the resulting P {positive effect is. The method of obtaining a press mass from the hydrolysis of lignin, which includes processing in the mixer hydrolytic lignin aKTHBaTOpOM 2j The disadvantages of these methods are the physicomechanical characteristics and complexity of the technological process. The purpose of the invention is to increase the fvzgaso mechanical characteristics and the production process. The goal is achieved by introducing an aqueous solution of a polyvshnutyutam emulsin containing 5–2 O% polynomially emulsion and 2OO –250% water by weight of dry gtrolysis lignin as an activator, and after processing in the mixer, the resulting slurry is dried at a temperature of 8O to 15–15% in the ground is ground. The drawing shows a diagram of the receipt of the KIA press mass from hydrolytic ling. The hydrolytic lignin from the hopper 1 is fed to the reference balance 2, and then transported by the conveyor 3 to the mixture 4, into which the water solution emulator is prepared into the mixture 7 from the tank 5 of the water tank (EPVA). The pulp obtained by stirring in the mixer 4 is dried in the drying cabinet 8 to a moisture content of -18% at 8 ° 12 ° C and ground.

3,9813234

Example. According to the proposed technological parameters, it manufactures

Sob is preparing a series of charge compositions of ss press mass.

different content of 5-20% poly-B table. Tables 1 and 2 show the composition of shihvil acetate acetate and -20O - 250% of the press mass and physicomechanical

water from the mass of dry hydrolysis lig ... characteristics of samples made

The invention claims that, in order to guide a physicist about the mechanic of the mass of the hydro-j characteristics of the resulting materolysis lignin, including processing the matrix in order to simplify the technological process of the hydrolysis lignin of the active process, they were introduced as an activator by TODOM, distinguishing them from them polyvinyl acetate emulsion

table 2

79813238

5 to 20% polyvinylaaatetate 1Sources of information

emulsions and 200 - 25O% water by weight taken into account during the examination

dry hydrolysis lignin, and pos-1. USSR author's certificate

Be processed in the mixer obtained by the pulp - N 322348, cl. From 08 L 61/24, 1969. pp. Dried at 8О - i2ffc to 15 - 18% 5 2. USSR author's certificate of moisture and crushed. N 376419, cl. C 08 H S / O2, 1971.

Claims (1)

A method of obtaining press pulp from a hydro- ^and role ene lignin, comprising treating an activag todom in a hydrolysis lignin mixer, t he That, in order to increase the physico-mechanical, characteristics of the resulting material and simplify the process, an aqueous solution of polyvinyl acetate emulsin is introduced as an activator, 7 981323 8 containing 5 - 20% polyvinyl acetate 1 Sources of information, emulsions and 200 - 250% water by weight of dry hydrolysis lignin, and after processing in the mixer, the resulting pulp is dried at 80 - 12C ^ C to 15 - 18% humidity and ground. taken into account in the examination ’